DOE’S BUILDERS CHALLENGE OCTOBER 22, 2008

American Standard Existing Home American Standard Home ENERGY STAR Tax Credit/2006 Building America Home Heather’s Home 55 St. John 52 Vaught Home 47 Net Zero Energy Home

TEAM ASSEMBLY Builder Architect/Designer Landscape Design Home Energy Rater & Verifier Modeling Lender & Appraiser

CHARACTERISTICS Less Energy Less Water Less Natural Resources Durable / Low-Maintenance Creates Less Waste Healthier & More Comfortable

CHARACTERISTICS Lower Energy Bills Lower Water Bills Reduced Greenhouse Emissions Improved Indoor Air Quality Increased Comfort

DESIGN PRINCIPLES Building Should be Elongated on an East-West Axis to Control Hot Summer Sun Utilize Natural Breezes and Shading Light Color, Highly Reflective and Low-Emissivity Roof

HIGH PERFORMANCE HOMES “Solar is a major contributor to energy inefficiency but an easy problem to downgrade if you don’t mind a little window dressing. Awnings may reduce the energy needed to cool a home by almost 25% in Boston 40% in Sacramento 70% in Seattle. Of course, shady conditions can also be achieved with site planning for minimal solar exposure, tree coverage and permanent architectural overhangs or screens on the facades of sunny elevations.” Builder Magazine, September 2007

PASSIVE SOLAR DESIGN

PORCHES SOUTH ORIENTATION

PASSIVE SOLAR DESIGN

MATERIAL CHOICES Choose Recycled or Reclaimed Materials Build to Avoid Cuts and Sizes to Minimize Waste Choose Wind/Impact-Resistant, Durable Materials Optimize Material Selections that Provide Greater Energy Savings

SIP’S

ICF’S

ADVANCED FRAMING 19.2" or 24" on-center framing, floor systems 19.2" or 24" on-center framing, bearing walls 24" on-center framing, roof systems 24” on-center interior partitions Single top plate walls Right-sized headers or insulated (box) headers (where required) Eliminate headers in non-bearing walls Doubling the rim joist in lieu of header (2x6 or deeper wall framing) Ladders blocking at interior-wall-to-exterior-wall intersections Two stud corner framing

SPRAY FOAM INSULATION

ROOFING

SOLAR HOT WATER

LIMIT OR ELIMINATE VOC’S Low VOC & Low Odor Long-Term Durability Maintain Performance Green Seal Certification

HVAC & AIR INFILTRATION Choose High Efficiency Equipment- SEER Use Programmable Thermostats Correct Ventilation Correct Sizing- Manual “J” Correct Ducts- Manual “D” Correct Sealing

DUCT LOCATION Oak Ridge National Laboratory

HEALTH Maintain Indoor Relative Humidity (35-50%) Use Low or No VOC Paints, Stains & Adhesives Use Easy to Clean Materials Use Certified Green Carpets Eliminate Garages from Conditioned Spaces Use Green Guard Certified

AIR FILTRATION SYSTEMS Minimum Efficiency Reporting Value = MERV Higher the MERV = Higher the Filtration Systems May Include HEPA Filter and Purifier Lennox PureAir

HEALTHY KITCHEN

ENERGY STAR APPLIANCES Appliances & lighting can account for 20-40% of home energy use Energy Star identifies this washing machine as at least 50% more efficient that most top load machines

ENERGY STAR LIGHTING

CASE STUDIES

2005 EVHA HOME - CONSTRUCTION SIP Walls (6 ½”) and Roof (8 3/8”) Sealing with Expanding Foam Splines Slab Wall/Roof Intersections

2005 EVHA HOME - CONSTRUCTION House Wrap over Exterior SIP Walls All Window & Door Penetrations Flashed

2005 EVHA HOME - SITE House Nestled in Trees below Bluff Natural Windbreak from Cold North Winds Cool White Limestone and Grout AC units in Shade

2005 EVHA HOME - ROOF Voslite Roof – Recycled Plastics

2005 EVHA HOME - SHADING Barrier from Sun Controls Passive Solar Heat Catches Wind

2005 EVHA HOME - SHADING Deciduous Trees Provide Shade in Summer

2005 EVHA HOME - SUNROOM Natural Draw Windows & Floor – Passive Solar Gain Air-Lock Entry Shut off when not in Use Limestone Walls – Indirect Thermal Gain

2005 EVHA HOME – SUNROOM FACILITATES NATURAL AIR FLOW

2005 EVHA HOME – FEATURES No VOC Paints & Stains Daylighting – Windows & Doors Concrete Floors Cross Ventilation with Windows & Doors Casement Windows – Compression Seal

2005 EVHA HOME

2005 EVHA HOME - KITCHEN TWO SMALLER DISHWASHERS ENERGY STAR APPLIANCES

2005 EVHA HOME - FIREPLACE Xtrordinair Wood Burning Stove – Outside Combustion Air

2005 EVHA HOME – SAVINGS Average Monthly Energy Bill = $133 All Electric Home Total Electric Consumption 5,125 sf

2006 EVHA HOME

2006 EVHA HOME - SYSTEMS SIP’s ICF’s Icynene Foam

2006 EVHA HOME - DAYLIGHTING SOLAR TUBES SOUTH FACING WINDOWS

2006 EVHA HOME – ATTIC FANS 2 SPEED ATTIC FANS WITH 2 PELLA AWNING WINDOWS

2006 EVHA HOME – FEATURES No VOC Paints & Stains Tile Flooring Regional Ash Cabinetry Low Voltage Lighting Energy Star Appliances

2006 EVHA HOME - TESTING ENERGY STAR RATER – GUARANTEED WATT SAVERS

2006 EVHA HOME – SAVINGS Average Monthly Energy Bill = $108 3,600 SF Total Electric Consumption

2007 EVHA HOME

2007 EVHA HOME – FEATURES Extremely Energy Efficient Healthy Green Quiet Comfortable

2007 EVHA HOME – PASSIVE SOLAR PROPERLY SIZED PORCHES & OVERHANGS

2007 EVHA HOME – SIP’S EASE OF INSTALLATION TIGHT ENVELOPE

2007 EVHA HOME – SEALING FILL VOIDS WITH EXPANDING FOAM

2007 EVHA HOME – FLASHING FLASHING & SEALING WINDOWS AND DOORS

2007 EVHA HOME – HIGH SEER HVAC INFINITELY VARIABLE SPEED FAN WITH SEPARATE ZONES

2007 EVHA HOME – ROOF DURABLE & REFLECTS HOT SUMMER SUN

2007 EVHA HOME – WATER HEATER SOLAR HOT WATER

2007 EVHA HOME – WINDOWS LOW-E WINDOWS & DOORS

2007 EVHA HOME – ATTIC FANS DUAL ATTIC FANS DELAY USE OF AC

2007 EVHA HOME – ENERGY STAR ENERGY STAR APPLIANCES & LIGHTING

2007 EVHA HOME – DAYLIGHTING REDUCES THE NEED FOR ELECTRICITY

2007 EVHA HOME - DAYLIGHTING

2007 EVHA HOME – FEATURES No or Low VOC Paints & Stains Rainwater Collection Regional White Ash Cabinetry PET Carpet, Bamboo, Concrete Xeriscaping

2007 EVHA HOME – FEATURES James Hardie Siding Sealed Combustion Fireplace Impasse Termite Protection Dual Flush Toilets Green Guard Countertops

2007 EVHA HOME – SAVINGS Average Monthly Energy Bill = $75 2,028 SF Total Electric Consumption

2008 EVHA HOME

2008 EVHA HOME – SIP’S STRUCTURAL INSULATED PANELS

2008 EVHA HOME – FEATURES SIP Walls & Roof Metal Roof Crawl Space with Icynene Regionally Quarried Rock Pervious Driveways

2008 EVHA HOME - DAYLIGHTING

2008 EVHA HOME – FEATURES No or Low VOC Paints & Stains Solar Hot Water Regional Cabinetry PET Carpet & Bamboo Flooring Xeriscaping

2008 EVHA HOME – SIP’S REFLECTIVE EXTERIOR FINISHES

2008 EVHA HOME – PASSIVE SOLAR

2008 EVHA HOME – SAVINGS Average Monthly Electric Bill = $135 3,000 sf